God works in mysterious ways. Is it able to breathe when cold? Just have to rule out possibilities.
could bypass the fuel system by running off a jerry can to rule out breathing starvation.
I don't know if pump solenoid could cause this but I wondered? Who knows.
You can say that again, the many great mysteries of life, only God knows...
EDIT:
@Paladintruck how cold are we talking, what state are you in ?